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Cai Y, Ren X, Wang J, Ma B, Chen O. Effects of Breathing Exercises in Patients With Chronic Obstructive Pulmonary Disease: A Network Meta-analysis. Arch Phys Med Rehabil 2024; 105:558-570. [PMID: 37150427 DOI: 10.1016/j.apmr.2023.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 03/28/2023] [Accepted: 04/10/2023] [Indexed: 05/09/2023]
Abstract
OBJECTIVE A network meta-analysis of randomized controlled trials (RCTs) was conducted to compare and rank the effectiveness of various breathing exercises for patients with chronic obstructive pulmonary disease (COPD). DATA SOURCES We searched PubMed, Web of Science, Embase, and the Cochrane Library databases to determine the articles. STUDY SELECTION Publications investigating the effect of breathing exercises on exercise capacity (six-minute walk test [6MWT]), pulmonary function (the ratio of the first second forced expiratory volume of forced vital capacity [FEV1/FVC]), quality of life (St George's Respiratory Questionnaire [SGRQ]), inspiratory muscle pressure (maximum inspiratory pressure [PImax]), and dyspnea (Borg scale) were searched. DATA EXTRACTION Data extracted by 2 researchers were entered into predesigned tables for data extraction. The quality of the literature was assessed using the Cochrane Collaboration's tool. DATA SYNTHESIS A total of 43 RCTs involving 1977 participants were analyzed. To boost exercise capacity, the top 2 exercises were inspiratory muscle training (75%), Chinese traditional fitness exercises (13%); To improve pulmonary function, the top 2 exercises were Chinese traditional fitness exercises (32%), diaphragm breathing (30%); To raise patients' quality of life, the top 2 exercises were yoga (52%), diaphragm breathing (28%); To increase inspiratory muscle pressure, the top 2 exercises were pursed-lip breathing (47%), Chinese traditional fitness exercises (25%); To improve dyspnea, the top 2 exercises were yoga (44%), inspiratory muscle training (22%). CONCLUSIONS Various breathing exercises for COPD patients confer benefits that manifest in diverse ways. Pulmonary rehabilitation specialists could administer personalized breathing exercises tailored to each patient's condition to attain optimal therapeutic outcomes.
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Affiliation(s)
- Yingying Cai
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaohe Ren
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Jingyi Wang
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Bin Ma
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ou Chen
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China.
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Ammous O, Feki W, Lotfi T, Khamis AM, Gosselink R, Rebai A, Kammoun S. Inspiratory muscle training, with or without concomitant pulmonary rehabilitation, for chronic obstructive pulmonary disease (COPD). Cochrane Database Syst Rev 2023; 1:CD013778. [PMID: 36606682 PMCID: PMC9817429 DOI: 10.1002/14651858.cd013778.pub2] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Inspiratory muscle training (IMT) aims to improve respiratory muscle strength and endurance. Clinical trials used various training protocols, devices and respiratory measurements to check the effectiveness of this intervention. The current guidelines reported a possible advantage of IMT, particularly in people with respiratory muscle weakness. However, it remains unclear to what extent IMT is clinically beneficial, especially when associated with pulmonary rehabilitation (PR). OBJECTIVES: To assess the effect of inspiratory muscle training (IMT) on chronic obstructive pulmonary disease (COPD), as a stand-alone intervention and when combined with pulmonary rehabilitation (PR). SEARCH METHODS We searched the Cochrane Airways trials register, CENTRAL, MEDLINE, Embase, PsycINFO, Cumulative Index to Nursing and Allied Health Literature (CINAHL) EBSCO, Physiotherapy Evidence Database (PEDro) ClinicalTrials.gov, and the World Health Organization International Clinical Trials Registry Platform on 20 October 2021. We also checked reference lists of all primary studies and review articles. SELECTION CRITERIA We included randomized controlled trials (RCTs) that compared IMT in combination with PR versus PR alone and IMT versus control/sham. We included different types of IMT irrespective of the mode of delivery. We excluded trials that used resistive devices without controlling the breathing pattern or a training load of less than 30% of maximal inspiratory pressure (PImax), or both. DATA COLLECTION AND ANALYSIS We used standard methods recommended by Cochrane including assessment of risk of bias with RoB 2. Our primary outcomes were dyspnea, functional exercise capacity and health-related quality of life. MAIN RESULTS: We included 55 RCTs in this review. Both IMT and PR protocols varied significantly across the trials, especially in training duration, loads, devices, number/ frequency of sessions and the PR programs. Only eight trials were at low risk of bias. PR+IMT versus PR We included 22 trials (1446 participants) in this comparison. Based on a minimal clinically important difference (MCID) of -1 unit, we did not find an improvement in dyspnea assessed with the Borg scale at submaximal exercise capacity (mean difference (MD) 0.19, 95% confidence interval (CI) -0.42 to 0.79; 2 RCTs, 202 participants; moderate-certainty evidence). We also found no improvement in dyspnea assessed with themodified Medical Research Council dyspnea scale (mMRC) according to an MCID between -0.5 and -1 unit (MD -0.12, 95% CI -0.39 to 0.14; 2 RCTs, 204 participants; very low-certainty evidence). Pooling evidence for the 6-minute walk distance (6MWD) showed an increase of 5.95 meters (95% CI -5.73 to 17.63; 12 RCTs, 1199 participants; very low-certainty evidence) and failed to reach the MCID of 26 meters. In subgroup analysis, we divided the RCTs according to the training duration and mean baseline PImax. The test for subgroup differences was not significant. Trials at low risk of bias (n = 3) demonstrated a larger effect estimate than the overall. The summary effect of the St George's Respiratory Questionnaire (SGRQ) revealed an overall total score below the MCID of 4 units (MD 0.13, 95% CI -0.93 to 1.20; 7 RCTs, 908 participants; low-certainty evidence). The summary effect of COPD Assessment Test (CAT) did not show an improvement in the HRQoL (MD 0.13, 95% CI -0.80 to 1.06; 2 RCTs, 657 participants; very low-certainty evidence), according to an MCID of -1.6 units. Pooling the RCTs that reported PImax showed an increase of 11.46 cmH2O (95% CI 7.42 to 15.50; 17 RCTs, 1329 participants; moderate-certainty evidence) but failed to reach the MCID of 17.2 cmH2O. In subgroup analysis, we did not find a difference between different training durations and between studies judged with and without respiratory muscle weakness. One abstract reported some adverse effects that were considered "minor and self-limited". IMT versus control/sham Thirty-seven RCTs with 1021 participants contributed to our second comparison. There was a trend towards an improvement when Borg was calculated at submaximal exercise capacity (MD -0.94, 95% CI -1.36 to -0.51; 6 RCTs, 144 participants; very low-certainty evidence). Only one trial was at a low risk of bias. Eight studies (nine arms) used the Baseline Dyspnea Index - Transition Dyspnea Index (BDI-TDI). Based on an MCID of +1 unit, they showed an improvement only with the 'total score' of the TDI (MD 2.98, 95% CI 2.07 to 3.89; 8 RCTs, 238 participants; very low-certainty evidence). We did not find a difference between studies classified as with and without respiratory muscle weakness. Only one trial was at low risk of bias. Four studies reported the mMRC, revealing a possible improvement in dyspnea in the IMT group (MD -0.59, 95% CI -0.76 to -0.43; 4 RCTs, 150 participants; low-certainty evidence). Two trials were at low risk of bias. Compared to control/sham, the MD in the 6MWD following IMT was 35.71 (95% CI 25.68 to 45.74; 16 RCTs, 501 participants; moderate-certainty evidence). Two studies were at low risk of bias. In subgroup analysis, we did not find a difference between different training durations and between studies judged with and without respiratory muscle weakness. Six studies reported theSGRQ total score, showing a larger effect in the IMT group (MD -3.85, 95% CI -8.18 to 0.48; 6 RCTs, 182 participants; very low-certainty evidence). The lower limit of the 95% CI exceeded the MCID of -4 units. Only one study was at low risk of bias. There was an improvement in life quality with CAT (MD -2.97, 95% CI -3.85 to -2.10; 2 RCTs, 86 participants; moderate-certainty evidence). One trial was at low risk of bias. Thirty-two RCTs reported PImax, showing an improvement without reaching the MCID (MD 14.57 cmH2O, 95% CI 9.85 to 19.29; 32 RCTs, 916 participants; low-certainty evidence). In subgroup analysis, we did not find a difference between different training durations and between studies judged with and without respiratory muscle weakness. None of the included RCTs reported adverse events. AUTHORS' CONCLUSIONS IMT may not improve dyspnea, functional exercise capacity and life quality when associated with PR. However, IMT is likely to improve these outcomes when provided alone. For both interventions, a larger effect in participants with respiratory muscle weakness and with longer training durations is still to be confirmed.
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Affiliation(s)
- Omar Ammous
- Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Walid Feki
- Department of Respiratory Medicine, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Tamara Lotfi
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, Canada
| | | | - Rik Gosselink
- Department of Rehabilitation Sciences, Faculty of Movement and Rehabilitation Sciences, University Hospitals Leuven, Leuven, Belgium
| | - Ahmed Rebai
- Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Samy Kammoun
- Department of Respiratory Medicine, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
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Neşe A, Samancıoğlu Bağlama S. The Effect of Progressive Muscle Relaxation and Deep Breathing Exercises on Dyspnea and Fatigue Symptoms of COPD Patients: A Randomized Controlled Study. Holist Nurs Pract 2022; 36:E18-E26. [PMID: 35708562 DOI: 10.1097/hnp.0000000000000531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study was conducted to examine the effect of progressive muscle relaxation and deep breathing exercises applied to patients diagnosed with chronic obstructive pulmonary disease (COPD) on their dyspnea and fatigue symptoms. The study was a randomized controlled experimental trial and comprised 116 COPD patients who applied to a chest diseases follow-up outpatient clinic hospital located in Gaziantep, Turkey. The data were collected using the "Patient Information Form" including sociodemographic and disease-related characteristics of the patients, COPD and Asthma Fatigue Scale (CAFS), and Dyspnea-12 Scale. Dyspnea-12 Scale and CAFS total scores of the patients in the intervention group showed a statistically significant difference before and after the Progressive Relaxation Exercise and Deep Breathing Exercise applications (P < .05). Although the Dyspnea-12 Scale and CAFS total mean scores showed an increase in the intervention group, they remained the same in the control group. In the present study, it was found that the Progressive Muscle Relaxation Exercise and Deep Breathing Exercise applied to COPD patients were effective in decreasing their dyspnea and fatigue symptoms.
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Affiliation(s)
- Adile Neşe
- Gaziantep University Vocational School of Health Services, Gaziantep, Turkey (Dr Neşe); and Faculty of Health Sciences, Nursing Department, Muğla Sıtkı Kocaman University, Muğla, Turkey (Dr Samancıoğlu Bağlama)
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Schrijver J, Lenferink A, Brusse-Keizer M, Zwerink M, van der Valk PD, van der Palen J, Effing TW. Self-management interventions for people with chronic obstructive pulmonary disease. Cochrane Database Syst Rev 2022; 1:CD002990. [PMID: 35001366 PMCID: PMC8743569 DOI: 10.1002/14651858.cd002990.pub4] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND Self-management interventions help people with chronic obstructive pulmonary disease (COPD) to acquire and practise the skills they need to carry out disease-specific medical regimens, guide changes in health behaviour and provide emotional support to enable them to control their disease. Since the 2014 update of this review, several studies have been published. OBJECTIVES Primary objectives To evaluate the effectiveness of COPD self-management interventions compared to usual care in terms of health-related quality of life (HRQoL) and respiratory-related hospital admissions. To evaluate the safety of COPD self-management interventions compared to usual care in terms of respiratory-related mortality and all-cause mortality. Secondary objectives To evaluate the effectiveness of COPD self-management interventions compared to usual care in terms of other health outcomes and healthcare utilisation. To evaluate effective characteristics of COPD self-management interventions. SEARCH METHODS We searched the Cochrane Airways Trials Register, CENTRAL, MEDLINE, EMBASE, trials registries and the reference lists of included studies up until January 2020. SELECTION CRITERIA Randomised controlled trials (RCTs) and cluster-randomised trials (CRTs) published since 1995. To be eligible for inclusion, self-management interventions had to include at least two intervention components and include an iterative process between participant and healthcare provider(s) in which goals were formulated and feedback was given on self-management actions by the participant. DATA COLLECTION AND ANALYSIS Two review authors independently selected studies for inclusion, assessed trial quality and extracted data. We resolved disagreements by reaching consensus or by involving a third review author. We contacted study authors to obtain additional information and missing outcome data where possible. Primary outcomes were health-related quality of life (HRQoL), number of respiratory-related hospital admissions, respiratory-related mortality, and all-cause mortality. When appropriate, we pooled study results using random-effects modelling meta-analyses. MAIN RESULTS We included 27 studies involving 6008 participants with COPD. The follow-up time ranged from two-and-a-half to 24 months and the content of the interventions was diverse. Participants' mean age ranged from 57 to 74 years, and the proportion of male participants ranged from 33% to 98%. The post-bronchodilator forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) ratio of participants ranged from 33.6% to 57.0%. The FEV1/FVC ratio is a measure used to diagnose COPD and to determine the severity of the disease. Studies were conducted on four different continents (Europe (n = 15), North America (n = 8), Asia (n = 1), and Oceania (n = 4); with one study conducted in both Europe and Oceania). Self-management interventions likely improve HRQoL, as measured by the St. George's Respiratory Questionnaire (SGRQ) total score (lower score represents better HRQoL) with a mean difference (MD) from usual care of -2.86 points (95% confidence interval (CI) -4.87 to -0.85; 14 studies, 2778 participants; low-quality evidence). The pooled MD of -2.86 did not reach the SGRQ minimal clinically important difference (MCID) of four points. Self-management intervention participants were also at a slightly lower risk for at least one respiratory-related hospital admission (odds ratio (OR) 0.75, 95% CI 0.57 to 0.98; 15 studies, 3263 participants; very low-quality evidence). The number needed to treat to prevent one respiratory-related hospital admission over a mean of 9.75 months' follow-up was 15 (95% CI 8 to 399) for participants with high baseline risk and 26 (95% CI 15 to 677) for participants with low baseline risk. No differences were observed in respiratory-related mortality (risk difference (RD) 0.01, 95% CI -0.02 to 0.04; 8 studies, 1572 participants ; low-quality evidence) and all-cause mortality (RD -0.01, 95% CI -0.03 to 0.01; 24 studies, 5719 participants; low-quality evidence). We graded the evidence to be of 'moderate' to 'very low' quality according to GRADE. All studies had a substantial risk of bias, because of lack of blinding of participants and personnel to the interventions, which is inherently impossible in a self-management intervention. In addition, risk of bias was noticeably increased because of insufficient information regarding a) non-protocol interventions, and b) analyses to estimate the effect of adhering to interventions. Consequently, the highest GRADE evidence score that could be obtained by studies was 'moderate'. AUTHORS' CONCLUSIONS Self-management interventions for people with COPD are associated with improvements in HRQoL, as measured with the SGRQ, and a lower probability of respiratory-related hospital admissions. No excess respiratory-related and all-cause mortality risks were observed, which strengthens the view that COPD self-management interventions are unlikely to cause harm. By using stricter inclusion criteria, we decreased heterogeneity in studies, but also reduced the number of included studies and therefore our capacity to conduct subgroup analyses. Data were therefore still insufficient to reach clear conclusions about effective (intervention) characteristics of COPD self-management interventions. As tailoring of COPD self-management interventions to individuals is desirable, heterogeneity is and will likely remain present in self-management interventions. For future studies, we would urge using only COPD self-management interventions that include iterative interactions between participants and healthcare professionals who are competent using behavioural change techniques (BCTs) to elicit participants' motivation, confidence and competence to positively adapt their health behaviour(s) and develop skills to better manage their disease. In addition, to inform further subgroup and meta-regression analyses and to provide stronger conclusions regarding effective COPD self-management interventions, there is a need for more homogeneity in outcome measures. More attention should be paid to behavioural outcome measures and to providing more detailed, uniform and transparently reported data on self-management intervention components and BCTs. Assessment of outcomes over the long term is also recommended to capture changes in people's behaviour. Finally, information regarding non-protocol interventions as well as analyses to estimate the effect of adhering to interventions should be included to increase the quality of evidence.
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Affiliation(s)
- Jade Schrijver
- Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, Netherlands
- Section Cognition, Data and Education, Faculty of Behavioural, Management and Social Sciences, University of Twente, Enschede, Netherlands
| | - Anke Lenferink
- Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, Netherlands
- Section Health Technology and Services Research, Faculty of Behavioural, Management and Social sciences, Technical Medical Centre, University of Twente, Enschede, Netherlands
| | - Marjolein Brusse-Keizer
- Section Health Technology and Services Research, Faculty of Behavioural, Management and Social sciences, Technical Medical Centre, University of Twente, Enschede, Netherlands
- Medical School Twente, Medisch Spectrum Twente, Enschede, Netherlands
| | - Marlies Zwerink
- Value-Based Health Care, Medisch Spectrum Twente, Enschede, Netherlands
| | | | - Job van der Palen
- Section Cognition, Data and Education, Faculty of Behavioural, Management and Social Sciences, University of Twente, Enschede, Netherlands
- Medical School Twente, Medisch Spectrum Twente, Enschede, Netherlands
| | - Tanja W Effing
- College of Medicine and Public Health, School of Medicine, Flinders University, Adelaide, Australia
- School of Psychology, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, Australia
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Ma RC, Zhao Y, Liu X, Cao HP, Wang YQ, Yin YY, Xie J. Multimodal Exercise Program: A Pilot Randomized Trial for Patients With Lung Cancer Receiving Surgical Treatment. Clin J Oncol Nurs 2021; 25:E26-E34. [PMID: 34019026 DOI: 10.1188/21.cjon.e26-e34] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Curative lung resection is the best option for patients with stage I-III lung cancer, and the best exercise intervention in these patients has not been determined. OBJECTIVES This pilot study explored whether a short-term pre- and postsurgery multimodal exercise program affected dyspnea, exercise capacity, inspiratory capacity, anxiety, and depression. METHODS A total of 101 patients were randomly allocated into the combined intervention group (n = 34), the breathing exercise group (n = 32), or the control group (n = 35). During hospitalization, patients in the two intervention groups received one or more kinds of exercise intervention, and patients in the control group only received usual care. Outcomes were assessed at admission, on the day before surgery, and at discharge. FINDINGS Both intervention groups achieved significant improvements in dyspnea, exercise capacity, and inspiratory capacity, and patients in the combined intervention group exhibited greater improvements in outcomes as compared to those randomized to the breathing exercise group.
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Saka S, Gurses HN, Bayram M. Effect of inspiratory muscle training on dyspnea-related kinesiophobia in chronic obstructive pulmonary disease: A randomized controlled trial. Complement Ther Clin Pract 2021; 44:101418. [PMID: 34034036 DOI: 10.1016/j.ctcp.2021.101418] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 05/02/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND The major symptom of chronic obstructive pulmonary disease (COPD) is dyspnea, which causes dyspnea-related kinesiophobia resulting in avoidance of activities associated with dyspnea or compensation by reducing the rate of activity. The aim of this study was to assess dyspnea-related kinesiophobia and determine the effect of inspiratory muscle training (IMT) on dyspnea-related kinesiophobia in COPD. METHODS Forty COPD subjects were randomly allocated to either the IMT or sham group. Both groups' maximal inspiratory pressure (MIP) was assessed weekly. All patients were instructed to perform the training exercises for 15 min twice a day, 5 days a week for a total of 8 weeks. In the IMT group, intensity was set at 30% of MIP and adjusted according to weekly MIP value. In the sham group, intensity remained constant at 15% of initial MIP. Pulmonary function test (PFT), respiratory muscle strength, 6-min walk test (6 MWT), Breathlessness Beliefs Questionnaire (BBQ), Modified Medical Research Council scale (MMRC), modified Borg scale, Hospital Anxiety and Depression Scale (HADS), Saint George's Respiratory Questionnaire (SGRQ), and COPD Assessment Test (CAT) were assessed before and after the intervention. RESULTS BBQ scores ranged from 18 to 51, with mean values in the IMT and sham groups of 39.80 ± 7.62 and 43.00 ± 6.58, respectively. When between-group differences of all outcome scores were compared, there was a statistically significant improvement in the IMT group than in the sham group (p < 0.05). After IMT, statistically significant decreases in BBQ and modified Borg scores were observed in within groups (p ≤ 0.001). These decreases were significantly greater in the IMT group (p ≤ 0.001). MMRC decreased significantly only in the IMT group (p < 0.001). There was a statistically significant increase in PFT values in the IMT group (p = 0.007-0.045), but no difference in the sham group (p = 0.129-0.886). Both groups showed statistically significant improvement in respiratory muscle strength, 6 MWT distance, and CAT score after 8 weeks (p < 0.05). All HADS and SGRQ scores decreased significantly in the IMT group (p < 0.001), whereas only the SGRQ activity score decreased significantly in the sham group (p = 0.017). CONCLUSIONS Our study provides data on the presence and level of dyspnea-related kinesiophobia in COPD patients. All patients had BBQ scores higher than 11, indicating dyspnea-related kinesiophobia. IMT reduced BBQ score and improved respiratory function, and exercise capacity. Our results also support the other known benefits of IMT such as reduced dyspnea and symptom perception, decreased anxiety and depression, and improved quality of life.
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Affiliation(s)
- Seda Saka
- Cardiopulmonary Physiotherapy Rehabilitation Department, Institute of Health Sciences, Bezmialem Vakif University, Istanbul, Turkey; Division of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Halic University, Istanbul, Turkey.
| | - Hulya Nilgun Gurses
- Department of Cardiopulmonary Physiotherapy and Rehabilitation, Division of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Bezmialem Vakif University, Istanbul, Turkey.
| | - Mehmet Bayram
- Department of Chest Medicine, Faculty of Medicine, Medipol University, Istanbul, Turkey.
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Zhang F, Zhong Y, Qin Z, Li X, Wang W. Effect of muscle training on dyspnea in patients with chronic obstructive pulmonary disease: A meta-analysis of randomized controlled trials. Medicine (Baltimore) 2021; 100:e24930. [PMID: 33655957 PMCID: PMC7939163 DOI: 10.1097/md.0000000000024930] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 02/04/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Rehabilitation training is beneficial for patients with chronic obstructive pulmonary disease (COPD). This study was aimed at evaluating the efficacy of muscle training on dyspnea. METHODS We used 5 common databases for conducting a meta-analysis included PubMed, the Cochrane Library, Science Direct, Web of Science and Clinical Trials.gov, and eligible randomized controlled trials (RCTs) were included. The main results of include studies were dyspnea of patients who had a clinical diagnosis of COPD measured using Borg score and Medical Research Council (MRC) or modified Medical Research Council (mMRC) scale as the criteria before and after intervention. The intervention measures included respiratory or expiratory muscles or upper limb (UL) or lower limb (LL) training. The mean differences (MD) with the 95% confidence interval (CI) were considered for summary statistics. We also assessed risk of bias using the Cochrane collaboration's tool, and the value of I2 was applied to evaluate the heterogeneity of the trials. RESULTS Fourteen RCTs with 18 interventions (n = 860 participants) were included. Muscle training significantly improved dyspnea during exercise and in the daily life of patients with COPD (MD, 95% CI: -0.58, -0.84 to -0.32, P < .0001 and -0.44, -0.65 to -0.24, P < .0001, respectively). In the subgroup analyses, the trials that used respiratory muscle and UL trainings significantly improved dyspnea during exercise (MD, 95% CI: -0.72, -1.13 to -0.31, P = .0005 and -0.53, -0.91 to -0.15, P = .007, respectively). The studies also showed that the participants in the rehabilitation group, who received respiratory muscle and UL trainings, had a significant improvement of dyspnea in daily life (MD, 95% CI: -0.38, -0.67 to -0.09, P = .01 and -0.51, -0.80 to -0.22, P = .0007, respectively). CONCLUSION There were some limitations that most of the subjects in this study were patients with moderate to severe COPD and were male, and the training period and duration were different. The analyses revealed that respiratory muscle and UL trainings can improve dyspnea in patients with COPD during exercise and in daily life.
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Affiliation(s)
- Fang Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital
| | - Yaping Zhong
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning Province, People's Republic of China
| | - Zheng Qin
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital
| | - Xiaomeng Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital
| | - Wei Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital
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Aweto HA, Obikeh EO, Tella BA. Effects of incentive spirometry on cardiopulmonary parameters, functional capacity and glycemic control in patients with Type 2 diabetes. Hong Kong Physiother J 2020; 40:121-132. [PMID: 33005076 PMCID: PMC7526058 DOI: 10.1142/s1013702520500110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 03/01/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Patients with Type 2 diabetes mellitus (T2DM) suffer cardiopulmonary impairment and may present with weakness of the inspiratory muscles. OBJECTIVE This study was designed to determine the effects of incentive spirometry (IS) on selected cardiopulmonary parameters, functional capacity and glycemic control in patients with T2DM. METHODS Fifty-nine participants (25 males and 34 females) recruited from the out-patient clinic of the Department of Medicine of two hospitals in Lagos State, Nigeria, who were randomly assigned into two groups, completed the study. In addition to the medical management of T2DM, IS group received incentive spirometry while control group continued with the medical management of T2DM alone. Selected cardiovascular parameters, pulmonary parameters, functional capacity (using 6-min walk test) and fasting blood glucose level were assessed at baseline and at the end of eight weeks intervention period. Data were analyzed using the Statistical Package for Social Sciences (SPSS Version 21). Level of significance was set at p < 0 . 05 . RESULTS There were statistically significant improvements in all the cardiovascular parameters ( p = 0 . 001 ) of IS group except systolic blood pressure. There were significant changes in all the pulmonary parameters, functional capacity and glycemic control ( p < 0 . 05 ) of IS group while there was none in control group. There were significant differences between the mean changes of various selected outcome measures of the two groups ( p < 0 . 05 ) except for diastolic blood pressure and blood glucose level. CONCLUSION IS had positive effects in improving cardiopulmonary function, functional capacity and glycemic control in patients with T2DM.
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Affiliation(s)
- Happiness Anulika Aweto
- Department of Physiotherapy, Faculty of Clinical Sciences, College of Medicine, University of Lagos, PMB 12003, Idi-Araba, Lagos, Nigeria
| | - Esther Onyinyechi Obikeh
- Department of Physiotherapy, Faculty of Clinical Sciences, College of Medicine, University of Lagos, PMB 12003, Idi-Araba, Lagos, Nigeria
| | - Bosede Abidemi Tella
- Department of Physiotherapy, Faculty of Clinical Sciences, College of Medicine, University of Lagos, PMB 12003, Idi-Araba, Lagos, Nigeria
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Inspiratory Muscle Training in Obstructive Sleep Apnea Associating Diabetic Peripheral Neuropathy: A Randomized Control Study. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5036585. [PMID: 32626744 PMCID: PMC7306097 DOI: 10.1155/2020/5036585] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/15/2020] [Accepted: 06/01/2020] [Indexed: 02/07/2023]
Abstract
Objective This work is aimed at assessing the effects of inspiratory muscle training on lung functions, inspiratory muscle strength, and aerobic capacity in diabetic peripheral neuropathy (DPN) patients with obstructive sleep apnea (OSA). Methods A randomized control study was performed on 55 patients diagnosed with DPN and OSA. They were assigned to the training group (IMT, n = 28) and placebo training group (P-IMT, n = 27). Inspiratory muscle strength, lung functions, and aerobic capacity were evaluated before and after 12 weeks postintervention. An electronic inspiratory muscle trainer was conducted, 30 min a session, three times a week for 12 consecutive weeks. Results From seventy-four patients, 55 have completed the study program. A significant improvement was observed in inspiratory muscle strength (p < 0.05) in the IMT group while no changes were observed in the P-IMT group (p > 0.05). No changes were observed in the lung function in the two groups (p > 0.05). Also, VO2max and VCO2max changed significantly after training in the IMT group (p < 0.05) while no changes were observed in the P-IMT group (p > 0.05). Other cardiopulmonary exercise tests did not show any significant change in both groups (p > 0.05). Conclusions Based on the outcomes of the study, it was found that inspiratory muscle training improves inspiratory muscle strength and aerobic capacity without a notable effect on lung functions for diabetic patients suffering from DPN and OSA.
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Formiga MF, Dosbaba F, Hartman M, Batalik L, Plutinsky M, Brat K, Ludka O, Cahalin LP. Novel versus Traditional Inspiratory Muscle Training Regimens as Home-Based, Stand-Alone Therapies in COPD: Protocol for a Randomized Controlled Trial. Int J Chron Obstruct Pulmon Dis 2020; 15:2147-2155. [PMID: 32982207 PMCID: PMC7494397 DOI: 10.2147/copd.s266234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/11/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Subjects with COPD frequently develop considerable weakness and deconditioning of the inspiratory musculature, which can be corrected with inspiratory muscle training (IMT). While rehabilitation centers may be able to provide IMT as part of the rather complex management of COPD, there is currently a lack of rehabilitation services in the Czech Republic. Remote IMT may then benefit subjects with COPD who are unable to attend or do not have access to rehabilitation programs. We aim at evaluating the utility of the test of incremental respiratory endurance (TIRE) as an at-home IMT method in subjects with COPD, while comparing the effectiveness of this novel training approach to the outcomes of traditional, threshold loading IMT protocols. METHODS/DESIGN This prospective, randomized controlled trial will comprise 8 weeks of at-home IMT sessions with remote supervision followed by 4 months of unsupervised, independent IMT. Eligible subjects will be randomly assigned to one of the following three distinct home-based IMT protocols: (1) TIRE, (2) Threshold loading, and (3) Sham training. Subjects allocated to the TIRE group will train once daily using an advanced IMT electronic system (PrO2), while the other two groups will receive threshold devices. Study outcomes will include measures of inspiratory muscle strength and endurance, pulmonary function, COPD-specific symptomatology, functional exercise capacity, surrogate markers of mortality risk, mental health status and health-related quality of life. DISCUSSION While we acknowledge the value of threshold loading IMT protocols, we believe that the TIRE training method has the potential to provide additional clinical benefits in COPD given its sophisticated remote tracking system and ability to modulate all aspects of muscular performance, including not only strength but also endurance, power and work capacity, allowing users to achieve considerably higher inspiratory pressures throughout the full range of inspiration when compared to other more traditionally used IMT methods.
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Affiliation(s)
- Magno F Formiga
- Departamento de Fisioterapia, Universidade Estadual da Paraíba, Campina Grande, PB, Brazil
| | - Filip Dosbaba
- Department of Rehabilitation, University Hospital Brno, Brno, Czech Republic
- Correspondence: Filip Dosbaba; Ladislav Batalik Department of Rehabilitation, University Hospital Brno, Jihlavska 20, Brno62500, Czech Republic Email ;
| | - Martin Hartman
- Department of Rehabilitation, University Hospital Brno, Brno, Czech Republic
| | - Ladislav Batalik
- Department of Rehabilitation, University Hospital Brno, Brno, Czech Republic
| | - Marek Plutinsky
- Department of Respiratory Diseases, University Hospital Brno, Brno, Czech Republic
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Kristian Brat
- Department of Respiratory Diseases, University Hospital Brno, Brno, Czech Republic
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ondrej Ludka
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lawrence P Cahalin
- Department of Physical Therapy, University of Miami – Miller School of Medicine, Coral Gables, FL, USA
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Hoffman M, Augusto VM, Eduardo DS, Silveira BMF, Lemos MD, Parreira VF. Inspiratory muscle training reduces dyspnea during activities of daily living and improves inspiratory muscle function and quality of life in patients with advanced lung disease. Physiother Theory Pract 2019; 37:895-905. [DOI: 10.1080/09593985.2019.1656314] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Mariana Hoffman
- Rehabilitation Sciences Post Graduation Program, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
- Physiotherapy Discipline, La Trobe Clinical School, La Trobe University, Melbourne, Australia
| | - Valéria M. Augusto
- Department of Internal Medicine, UFMG, 271, Centro, Belo Horizonte, Brazil
| | - Daisy S. Eduardo
- Advanced Lung Disease and Pre Lung Transplantation Ambulatory Clinics, UFMG, 271, Centro, Belo Horizonte, Brazil
| | - Bruna M. F. Silveira
- Rehabilitation Sciences Post Graduation Program, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Marcela D. Lemos
- Laboratory of Cardiorespiratory Assessment and Research, Department of Physical Therapy, UFMG, Belo Horizonte, Brazil
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Xu W, Li R, Guan L, Wang K, Hu Y, Xu L, Zhou L, Chen R, Chen X. Combination of inspiratory and expiratory muscle training in same respiratory cycle versus different cycles in COPD patients: a randomized trial. Respir Res 2018; 19:225. [PMID: 30458805 PMCID: PMC6245535 DOI: 10.1186/s12931-018-0917-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/18/2018] [Indexed: 11/24/2022] Open
Abstract
Background Difference between combined inspiratory and expiratory muscle training in same respiratory cycle or different cycles remained unclarified. We explored the difference between both patterns of combined trainings in patients with COPD. Methods In this randomized, open-label, controlled trial, stable COPD subjects trained for 48 minutes daily, for 8 weeks, using a monitoring device for quality control. Ninety-two subjects were randomly and equally assigned for sham training, inspiratory muscle training(IMT), combined inspiratory and expiratory muscle training in same cycle(CTSC) or combined inspiratory and expiratory muscle training in different cycles(CTDC). Respiratory muscle strength, as the primary endpoint, was measured before and after training. Registry: ClinicalTrials.gov (identifier: NCT02326181). Results Respiratory muscle training improved maximal inspiratory pressure(PImax), while no significant difference was found in PImax among IMT, CTSC and CTDC. Maximal expiratory pressure(PEmax) in CTSC and CTDC was greater than IMT(P = 0.026, and P=0.04, respectively) and sham training (P = 0.001). IMT, CTSC, and CTDC shortened inhalation and prolonged exhalation(P < 0.01). Subjects with respiratory muscle weakness in IMT and CTDC exhibited greater increase in PImax than those without. IMT, CTSC and CTDC showed no difference in symptoms and quality of life scales among themselves(P > 0.05). Conclusion Both patterns of CTSC and CTDC improved inspiratory and expiratory muscle strength, while IMT alone only raised PImax. Respiratory muscle training might change the respiratory cycles, and be more beneficial for COPD patients with inspiratory muscle weakness.
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Affiliation(s)
- Wenhui Xu
- Department of Respiratory Medicine, Zhujiang Hosptial, Southern Medical University, 253 Gongye Road, Guangzhou, 510282, China
| | - Rui Li
- Department of Respiratory Medicine, Zhujiang Hosptial, Southern Medical University, 253 Gongye Road, Guangzhou, 510282, China
| | - Lili Guan
- Department of Respiratory Medicine, The State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, China
| | - Kai Wang
- Department of Respiratory Medicine, Zhujiang Hosptial, Southern Medical University, 253 Gongye Road, Guangzhou, 510282, China
| | - Yuhe Hu
- Department of Respiratory Medicine, Zhujiang Hosptial, Southern Medical University, 253 Gongye Road, Guangzhou, 510282, China
| | - Limei Xu
- Department of Respiratory Medicine, Zhujiang Hosptial, Southern Medical University, 253 Gongye Road, Guangzhou, 510282, China
| | - Luqian Zhou
- Department of Respiratory Medicine, The State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, China
| | - Rongchang Chen
- Department of Respiratory Medicine, The State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, 151 Yanjiang Road, Guangzhou, 510120, China.
| | - Xin Chen
- Department of Respiratory Medicine, Zhujiang Hosptial, Southern Medical University, 253 Gongye Road, Guangzhou, 510282, China.
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Effectiveness of inspiratory muscle training on sleep and functional capacity to exercise in obstructive sleep apnea: a randomized controlled trial. Sleep Breath 2017; 22:631-639. [PMID: 29124630 DOI: 10.1007/s11325-017-1591-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 10/18/2017] [Accepted: 11/01/2017] [Indexed: 01/07/2023]
Abstract
PURPOSE The aim of this study was to evaluate the effectiveness of inspiratory muscle training (IMT) on sleep and functional capacity to exercise in subjects with obstructive sleep apnea (OSA). METHODS This is a controlled, randomized, double-blind study conducted in 16 OSA patients divided into two groups: training (IMT: n = 8) and placebo-IMT (P-IMT: n = 8). IMT was conducted during 12 weeks with a moderate load (50-60% of maximal inspiratory pressure-MIP), while P-IMT used a load < 20% of MPI. Total daily IMT time for both groups was 30 min, 7 days per week, twice a day. RESULTS There was no difference comparing IMT to P-IMT group after training for lung function (p > 0.05) and respiratory muscle strength (p > 0.05). Maximal oxygen uptake (VO2Max) was not significantly different between IMT and P-IMT group (mean difference - 1.76, confidence interval (CI) - 7.93 to 4.41, p = 0.71). The same was observed for the other ventilatory and cardiometabolic variables measured (p > 0.05). A significant improvement in sleep quality was found when Pittsburgh Sleep Quality Index (PSQI) values of IMT and P-IMT group after training were compared (mean difference: 3.7, confidence interval 95% (CI95%) 0.6 to 6.9, p = 0.02) but no significant changes were seen in daytime sleepiness between both groups after the intervention (mean difference: 3.4, CI 95%: - 3.3 to 10.0; p = 0.29). CONCLUSION According to these results, 12 weeks of moderate load IMT resulted in improved sleep quality, but there were no significant repercussions on functional capacity to exercise or excessive daytime sleepiness.
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Effects of two types of equal-intensity inspiratory muscle training in stable patients with chronic obstructive pulmonary disease: A randomised controlled trial. Respir Med 2017; 132:84-91. [DOI: 10.1016/j.rmed.2017.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 09/29/2017] [Accepted: 10/02/2017] [Indexed: 11/17/2022]
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Wang K, Zeng GQ, Li R, Luo YW, Wang M, Hu YH, Xu WH, Zhou LQ, Chen RC, Chen X. Cycle ergometer and inspiratory muscle training offer modest benefit compared with cycle ergometer alone: a comprehensive assessment in stable COPD patients. Int J Chron Obstruct Pulmon Dis 2017; 12:2655-2668. [PMID: 28919733 PMCID: PMC5593419 DOI: 10.2147/copd.s140093] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Cycle ergometer training (CET) has been shown to improve exercise performance of the quadriceps muscles in patients with COPD, and inspiratory muscle training (IMT) may improve the pressure-generating capacity of the inspiratory muscles. However, the effects of combined CET and IMT remain unclear and there is a lack of comprehensive assessment. MATERIALS AND METHODS Eighty-one patients with COPD were randomly allocated to three groups: 28 received 8 weeks of CET + IMT (combined training group), 27 received 8 weeks of CET alone (CET group), and 26 only received 8 weeks of free walking (control group). Comprehensive assessment including respiratory muscle strength, exercise capacity, pulmonary function, dyspnea, quality of life, emotional status, nutritional status, and body mass index, airflow obstruction, and exercise capacity index were measured before and after the pulmonary rehabilitation program. RESULTS Respiratory muscle strength, exercise capacity, inspiratory capacity, dyspnea, quality of life, depression and anxiety, and nutritional status were all improved in the combined training and CET groups when compared with that in the control group (P<0.05) after pulmonary rehabilitation program. Inspiratory muscle strength increased significantly in the combined training group when compared with that in the CET group (ΔPImax [maximal inspiratory pressure] 5.20±0.89 cmH2O vs 1.32±0.91 cmH2O; P<0.05). However, there were no significant differences in the other indices between the two groups (P>0.05). Patients with weakened respiratory muscles in the combined training group derived no greater benefit than those without respiratory muscle weakness (P>0.05). There were no significant differences in these indices between the patients with malnutrition and normal nutrition after pulmonary rehabilitation program (P>0.05). CONCLUSION Combined training is more effective than CET alone for increasing inspiratory muscle strength. IMT may not be useful when combined with CET in patients with weakened inspiratory muscles. Nutritional status had slight impact on the effects of pulmonary rehabilitation. A comprehensive assessment approach can be more objective to evaluate the effects of combined CET and IMT.
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Affiliation(s)
- Kai Wang
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Guang-Qiao Zeng
- Department of Respiratory Medicine, The State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Rui Li
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yu-Wen Luo
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Mei Wang
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yu-He Hu
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Wen-Hui Xu
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Lu-Qian Zhou
- Department of Respiratory Medicine, The State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Rong-Chang Chen
- Department of Respiratory Medicine, The State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Disease, First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xin Chen
- Department of Respiratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
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Xu J, He S, Han Y, Pan J, Cao L. Effects of modified pulmonary rehabilitation on patients with moderate to severe chronic obstructive pulmonary disease: A randomized controlled trail. Int J Nurs Sci 2017; 4:219-224. [PMID: 31406744 PMCID: PMC6626181 DOI: 10.1016/j.ijnss.2017.06.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 06/19/2017] [Accepted: 06/26/2017] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jingjuan Xu
- Department of Scientific Research and Education, The Third Hospital Affiliated to Soochow University, Changzhou, People's Republic of China
| | - Shengnan He
- Department of Respiratory Diseases, The Third Hospital Affiliated to Soochow University, Changzhou, People's Republic of China
| | - Ying Han
- Department of Respiratory Diseases, The Third Hospital Affiliated to Soochow University, Changzhou, People's Republic of China
| | - Jingya Pan
- Department of Respiratory Diseases, The Third Hospital Affiliated to Soochow University, Changzhou, People's Republic of China
| | - Ling Cao
- Department of Respiratory Diseases, The Third Hospital Affiliated to Soochow University, Changzhou, People's Republic of China
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